I don’t think this was planned by Canon when they implemented Dual Pixel RAW. On the other hand, it’s a pretty good example of the potential of this technology. I am sure we will see more new applications of Dual Pixel RAW. As soon as the EOS 5D Mark IV starts to be widely used, such discoveries will pop up.
You can learn about making stereoscopic images with Dual Pixel RAW files in this thread. CR2 files are available for download so you can try it for yourself. Another discussion thread about stereoscopic images made with Dual Pixel RAW files is here.
If you want to learn more about Dual Pixel RAW I recommend this article by Canon DLC.
Canon EOS 5D Mark IV pre-order links after the break.